Parts Information - Eaton

1 Eaton Medium Duty Piston PumpParts InformationModel 74624 and 74644,82,6 cm3/r [ in3/r] Displacementdesign code B2 Model 74624 and 746443 Model 74624 and 74644 Identification andTools RequiredIdentification NumbersStamped on each Product Number Descriptions74624 = Fixed Motor 82,6 cm3/r [ in3/r]74644 = Fixed Motor thru Shaft for Brake Mount 82,6 cm3/r [ in3/r]B- Rotation,D = DualC- Sequential LettersD- Design Code NumberABCDS ingle Motor - Product Number7 4 6 2 4 - D A H - 0 1 Required Tools1/2 in. Socket, w/ Ratchet WrenchExternal Retaining Ring Pliers (straight .090 tip)Internal Retaining Ring Pliers (straight .090 tip)O-ring PickTorque Wrench (54 [40 ] capacity)Hammer (soft face)Light Petroleum JellySeal DriverTesters InitialsDay of Month(two digits)Month (two digits)Serial Number Code:B 93 01 31 JBRevision levelof Parts two digitsof year built.( 93 for 1993 etc.)4 Model 74624 and 74644 Parts ListItemPart to List1 Drive Shaft2 Refer to List1 Backplate Assembly3 Refer to List1 Housing Assembly474614-501 Rotating Kit Assembly - Refer to specific Parts list4a74614-521 Rotating Kit Assembly - Heat Treated - Refer to specific Parts list+~ 516009-1181 Retaining Ring+~ 6160015-571O-ring, 2,37 mm Dia.

2 X 114,3 mm ID. [.0937 in. Dia. x in. ID.]774600-1021 Thrust Bearing874600-6002 Pivot974600-6011 Spider1074600-6031 Key1174604-59 Piston1274604-109 Piston Assembly1374604-591 Connector Plate1474600-6051 Spacer+~ 1516232-161 Shaft Seal1674600-1001 Bearing Race1774600-1101 Piston Race S/A1817140-11 Spring - Refer to specific Parts list18a17141-101 Spring - Refer to specific Parts list18b17142-11 Spring - Refer to specific Parts list1974600-6141 Pilot - Refer to specific Parts list19a74600-6201 Pilot - Refer to specific Parts list2074600-1041 Thrust Bearing2116241-D9161 Bearing Race2216032-5106 Cap Screws, 5/16-18, 25,4 mm [1 in.] Long - Refer to specific Parts list22a16032-5144 Cap Screws, 5/16-18, 38,1 mm [ in.] Long - Refer to specific Parts list+~ 2316077-261 Retaining Ring2474600-103A/RTrust Race2524500-6281 Key - 74624-204, 74644-210 & 74644-215~ 2616078-162 Retaining Ring2716241-16251 Thrust Bearing2816241-C16252 Bearing Race~ 2916232-161 Shaft Seal~ 3016048-3361 Washer~ 3116077-261 Retaining Ring3216032-5202 Cap Screws, 5/16-18, 50,8 mm [2 in.]

3 ] Long+~ 3316078-161 Retaining Ring3424500-6191 Key - Used with Shaft 74644-214 - Refer to specific Parts list34a16246-4301 Key - Used with Shaft 74644-209 & 74644-210 - Refer to specific Parts list3516103-1061 Plug S/A35-116133-61O-ring, 1,98 mm Dia. x 11,89 mm ID. [.078 in. Dia. x .468 in. ID.]3616048-616A/RWasher3774600-115A/RWa sher3874640-6001 Spring CollarSeal Repair Kit+ 74640-904 Seal Repair Kit for 74624 rear or same side ported motor.~ 74640-910 Seal Repair Kit for 74644 Through shaft 74624 and 74644 Drive Shaft S/A - Item #1 Item # part NumberDescription1a74624-20015 Tooth 16/32 Spline with SnapRing Groove with Snap Ring, .375-16 UNC-2B Thread, [.72] MinFull Thread, Shaft Ext [ ]1b74624-20115 Tooth 16/32 Spline with SnapRing Groove, Shaft Ext 46 [ ]1c74624-202 Taper 1:8, Dia [ ], WoodruffKeyway Dia [ ] X [.250], .625-18 UNC-2A Thread,Shaft Ext 69 [ ]1d74624-20313 Tooth 16/32 Spline, Shaft [ ]1e74624-204 Straight Shaft , Dia.

4 25,4 [ ],Keyway 6,35 x 38,1 [.250 x ],Shaft Ext. 63,5 [ ]1f74624-20615 Tooth 16/32 Spline Tapered 1:8with .375-16 UNC-2B Thread, [.72] Min Full Thread, Shaft Ext 46[ ]Through Shaft (74644)Item # part NumberDescription1g74644-206 Front - 15 Tooth 16/32 Spline withSnap Ring Groove with Snap Ring,.375-16 UNC-2B Thread, [.72]Min Full Thread, Shaft Ext [ ]Rear - 15 Tooth 16/32 Spline, ShaftLength From Mounting Flange [ ]1h74644-209 Front - 15 Tooth 16/32 SplineTapered 1:8 with .375-16 UNC-2 BThread, [.72] Min Full Thread,Shaft Ext 46 [ ]Rear - Straight Shaft Dia [ ], Keyway X [.250 ], Shaft Length from MountingFlange [ ]1i74644-210 Front - Straight Shaft , Dia. 25,4[ ], Keyway 6,35 x 38,1 [.250 ], Shaft Ext. 63,5 [ ] (KeyIncluded)Rear - Straight Shaft Dia [ ], Keyway X [.250 ], Shaft Length from MountingFlange [ ]1j74644-212 Front - 15 Tooth 16/32 SplineTapered 1:8 with .375-16 UNC-2 BThread, [.]

5 72] Min Full Thread,Shaft Ext 46 [ ]Rear - 15 Tooth 16/32 Spline, UNC-2B Thread, [.72]Min Full Thread, Shaft Length fromMounting Flange [ ]1k74644-214 Front - 15 Tooth 16/32 Spline, ShaftExt 46 [ ]Rear - Straight Shaft Dia [.875], Keyway X [.250 ], Shaft Length from MountingFlange [ ] (Short KeyIncluded)1l74644-215 Front - Taper .125:1 Dia [.875], Woodruff Keyway Dia [.620] X [.156], .500-20 UNF-2A Thread, Shaft Ext [ ]Rear - Straight Shaft Dia [ ], Keyway X [.250 ], Shaft Length from MountingFlange [ ]1m74644-216 Front - Taper .125:1 Dia [.875], Woodruff Keyway Dia [.620] X [.156], .500-20 UNF-2A Thread, Shaft Ext [ ]Rear - Straight Shaft Dia [ ], Shaft Length from MountingFlange 254 [ ], Shaft End HoleInternal [.252] X 14 [.55] DeepBackplate S/A - Item #2 Item # part NumberDescription2a74624-301 Rear porting, through drain intomounting flange2b74624-305 Rear porting, drain port Horizontaltop rear of unit2c74624-315 Same side porting, drain portvertical top rear of unit, twomounting holes bottom rear2d74624-317 Same side porting, drain portvertical top rear of unitHousing for Through Shaft (74644)Item # part NumberDescription2e74644-308 Same side porting, drain portvertical top rear of unitHousing S/A - Item #3 Item # part NumberDescription3a74624-303 Through drain into mounting flange3b74624-307No drain in housing3c74624-309 Special housing used with item 18#17141-10 and item 19 #74600-620.

6 Also has slotted 2 bolt B 74624 Parts Drawing23153-116717114232322222222261312 919818363738513325102-121242120814322222 2222222267 Model 74624 Specific Parts List42647srebmuNtcudorPAAD-BAD-DAD-EAD-G AD-HAD-JAD-LAD-MAD-NAD-PAD-RAD-SAD-metIs '#s'#s'#s'#s'#1a1b1c1d1d1e1a1e1f1f1b1b1f 12a2b2b2b2b2b2b2c2c2d2b2b2d23a3b3b3c3b3b 3b3b3b3b3b3b3b3444444444444 a445 XXXXXXXXXXXXX6 XXXXXXXXXXXXX7 XXXXXXXXXXXXX8 XXXXXXXXXXXXX9 XXXXXXXXXXXXX01 XXXXXXXXXXXXX11 XXXXXXXXXXXXX21 XXXXXXXXXXXXX31 XXXXXXXXXXXXX41 XXXXXXXXXXXXX51 XXXXXXXXXXXX61 XXXXXXXXXXXXX71 XXXXXXXXXXXXX8181b81b81a81b81b81b81b8181 81b81b8191919191a9191919191a91a91919102 XXXXXXXXXXXXX12 XXXXXXXXXXXXX2222222222222222a22a22a2222 22a2232 XXXXXXXXXXXX42 XXXXXXXXXXXX52XX23 XXXX33XX63XX73XX83 XXXtiKriapeRlaeS04627409-409-409-409-409 -409-409-409-409-409-409-409-409-8 Model 74644 Parts Drawing - Through Shaft23153-11671711423232223535-12222226 131292628272826302931198183637385134102- 1814333259 Model 7464444647srebmuNtcudorPEAD-GAD-JAD-KAD- MAD-NAD-PAD-RAD-SAD-metIs'#s'#s'#s'#s'#1 g1h1i1j1k1l1m1j1j12e2e2e2e2e2e2e2e2e23b3 a3b3a3b3b3b3a3b344444444445 XXXXXXXXX6 XXXXXXXXX7 XXXXXXXXX8 XXXXXXXXX9 XXXXXXXXX01 XXXXXXXXX11 XXXXXXXXX21 XXXXXXXXX31 XXXXXXXXX41 XXXXXXXXX51 XXXXXX61 XXXXXXXXX71 XXXXXXXXX818181818181818181819191a9191a9 1a919191a91a9122a22a22a22a22a22a22a22a22 a2232 XXXXX52X62 XXXXXXXXX72 XXXXXXXXX82 XXXXXXXXX92 XXXXXXXXX03 XXXXXXXXX13 XXXXXXXXX23 XXXXXXXXX33X434343a4353 XXX63 XXXX73 XXXX83 XXXXXXXXXtiKriapeRlaeS04647019-019-019-0 19-019-019-019-019-019-Specific Parts List10 Model 74624 and 74644 Notes11 Model 74624 and 74644 Notes 2008 Eaton CorporationAll Rights ReservedPrinted in USAD ocument No.

7 E-MOPI-TP001-ESupersedes 06-161 October 2008 EatonFluid Power GroupHydraulics Business USA14615 Lone Oak RoadEden Prairie, MN 55344 USATel: 952-937-9800 Fax: Power GroupHydraulics Business EuropeRoute de la Longeraie 71110 MorgesSwitzerlandTel: +41 (0) 21 811 4600 Fax: +41 (0) 21 811 4601 EatonFluid Power GroupHydraulics Business Asia Pacific 11th Floor Hong Kong New World Tower 300 Huaihai Zhong Road Shanghai 200021 China Tel: 86-21-6387-9988 Fax: 86-21-6335-3912